Panama time zone history
On standard time, clocks in Panama run 18 minutes ahead of local mean solar time. Local mean time, UTC−5:18:08, ended in 1890.
UTC−5
Standard time is UTC−5 (EST) all year under the current rules.
UTC−5 every day since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| January 1, 1890 | Local mean time (UTC−5:18:08) replaced | UTC−5:19:36 | CMT |
| April 22, 1908 | Standard time forward 20 minutes | UTC−5 | EST |
Also on UTC−5
Colombia, Jamaica, Guayaquil (Ecuador), Haiti, Cancún (Mexico), Cuba, Turks and Caicos Islands, Eirunepé (Brazil), Peru and Rio Branco (Brazil) (nearest first; 13 more on the list of offsets).
Clocks next door since 1970
- Costa Rica (511 km): usually 1 hour behind; different on 416 days in 1979, 1980, 1991 and 1992.
- Colombia (773 km): same time except 281 days in 1992 and 1993.
- Nicaragua (818 km): usually 1 hour behind; different on 2,910 days in 1973–1975, 1979, 1980, 1992–1997, 2005 and 2006.
- Honduras (1,013 km): usually 1 hour behind; different on 386 days in 1987, 1988 and 2006.
- Jamaica (1,044 km): same time except 2,023 days in 1974–1983.
How it compares
Panama has kept UTC−5 since 1908, with no clock changes since 1970.